When schools and teachers think about ‘drugs’, they may often initially focus on incidents on school grounds and how to respond to them, students at risk of using substances, or perhaps about drug education. However, substance use can impact the lives of young people in many ways, especially if they are affected by problematic drug or alcohol use in their own homes. This resource aims to summarise the key issues for children affected by parental substance use, and how schools can consider supporting them. It is aimed primarily at school governors and headteachers, but will also be relevant to members of staff with particular pastoral care duties, including school nurses, Education Welfare Officers, and anyone identified as a Designated Senior Person (DSP) for child protection in schools.